book Maths Puzzle Numerical Ability

Can someone help me with this problem?

A tree casts a shadow that measures 5 m. At the same time, a meter stick casts a shadow that is 0.4 m long. How tall is the tree?

Thanks,
Lyn

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book Other Question

Given the following measures of a vertex angle of a regular polygon,determine how many sides it has.

A.150 B.156 C.174 D.178 Write a system of two equations in two unknown. Solved by method of choice. I can't figure out how to pull out the data and set it up.

Book and magazines. At gwen's garage sale,